Interaction region design at the PEP-II B Factory

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We describe the Interaction Region (IR) for the PEP-II project, a collaboration of SLAC, LBNL, and LLNL. The near IR region inboard of 3 m from the interaction point (IP) is designed to focus the 3.1 GeV low energy beam (LEB) and bring it into head-on collision with the 9 GeV high energy beam (HEB). We describe the overall design parameters of this area and the integration with the detector geometry. Permanent magnet (PM) dipoles and quadrupoles inside the 1.5 T solenoidal field of the detector are described. The beam separation is initiated by a dipole field made from PM ... continued below

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5 p.

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Sullivan, M.; Bowden, G.; DeStaebler, H.; Ecklund, S.; Hodgson, J.; Mattison, T. et al. June 1, 1996.

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Description

We describe the Interaction Region (IR) for the PEP-II project, a collaboration of SLAC, LBNL, and LLNL. The near IR region inboard of 3 m from the interaction point (IP) is designed to focus the 3.1 GeV low energy beam (LEB) and bring it into head-on collision with the 9 GeV high energy beam (HEB). We describe the overall design parameters of this area and the integration with the detector geometry. Permanent magnet (PM) dipoles and quadrupoles inside the 1.5 T solenoidal field of the detector are described. The beam separation is initiated by a dipole field made from PM blocks in a stepped conical geometry in order to maximize detector solid angle coverage. The beam separation is completed by a hybrid PM quadrupole - dipole. The vacuum chamber is designed to mask synchrotron radiation (SR) away from the beam pipe located around the IP and to absorb the power (70 kW) generated by the SR, image current losses and higher-order-mode (HOM) losses.

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5 p.

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OSTI as DE97009061

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  • EPAC `96: 5. European particle accelerator conference, Barcelona (Spain), 10-14 Jun 1996

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  • Other: DE97009061
  • Report No.: SLAC-PUB--7206
  • Report No.: UCRL-JC--124395;LBNL--39053;CONF-960621--
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 621793
  • Archival Resource Key: ark:/67531/metadc693726

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 1996

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 9, 2016, 12:30 p.m.

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Sullivan, M.; Bowden, G.; DeStaebler, H.; Ecklund, S.; Hodgson, J.; Mattison, T. et al. Interaction region design at the PEP-II B Factory, article, June 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc693726/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.